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Swift Concurrency

Checked
jamesrochabrun·vlatest·frontend·MIT

Leverages Swift concurrency best practices for performant, responsive frontend experiences, optimizing asynchronous operations.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add jamesrochabrun/skills --skill swift-concurrency -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

jamesrochabrun

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned jamesrochabrun/skills at 2482c17637.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
2482c17637
Manifest
skills/swift-concurrency/SKILL.md
Scanned
6 files, 1,320 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

The Swift Concurrency skill enables AI agents to write and execute asynchronous Swift code using modern concurrency primitives like async/await, actors, and global actors. It allows agents to handle non-blocking operations efficiently while maintaining type safety and avoiding data races in iOS and macOS applications.

When to use it

  • Building responsive UIs that perform heavy network or disk I/O without freezing the main thread.
  • Managing complex state updates across multiple concurrent tasks in SwiftUI or UIKit apps.
  • Implementing secure, isolated actor-based services for shared mutable resources.
  • Writing background processing logic that automatically handles cancellation and error propagation.

Key capabilities

  • Async/Await Syntax: Native support for writing asynchronous functions that look synchronous.
  • Actors: Enforces strict isolation rules to prevent data races on shared state.
  • Global Actors: Provides a way to access global resources safely from any context.
  • Task Groups: Allows running multiple concurrent tasks and awaiting their collective completion.
  • Structured Concurrency: Automatically handles task cancellation, propagation, and cleanup.

Example prompts

  • "Create an async function that fetches user data from an API using async/await and updates a SwiftUI view."
  • "Write an actor to manage a shared shopping cart state safely across multiple concurrent tasks."
  • "Implement a background task group that downloads three image assets in parallel and waits for all to finish before displaying them."

Tips & gotchas

Ensure your development environment targets iOS 15 or later, as Swift Concurrency is not available in older versions. When using actors, remember that they are single-threaded by default; use @Sendable types carefully when passing data across actor boundaries to avoid runtime errors.